擅长:python、mysql、java
<p>提示:看看Sage中的示例:<a href="http://www.sagenb.org/home/pub/2199/#" rel="nofollow noreferrer">3D Love Heart</a>:</p>
<pre><code>x, y, z = var('x, y, z')
f(x, y, z) = (x^2+(9/4)*y^2+z^2-1)^3-x^2*z^3-(9/80)*y^2*z^3
P = implicit_plot3d(f, (x, -3, 3), (y, -3, 3), (z, -3, 3),
frame=False, axes=True, figsize=6,color="red")
P.show(viewer='tachyon')
</code></pre>
<p><img src="https://i.stack.imgur.com/5CV8s.png" alt="sage: Heart 3D"/></p>